The official WSJT-website of Dr. Joe Taylor, K1JT with the latest full-versions for Windows, Mac and Linux, the user-guides in English, German and Swedish and all the release notes:
WSJT-X improved download by DG2YCB
Time-Sync programmes:
FT8DMC Digital Mode Club
If you find any other good and helpful links or info about FT4 please tell us so we can add them to our website.